A huge bunch of people are going to say "Paladins is an Overwatch ripoff!" and to be honest, you can see a lot of Overwatch's influence, but it isn't exactly the same and both games have a different feeling to them.
That said, I prefer Overwatch because the lore is fantastic, the graphics are phenomenal and I love the characters and the dynamics. I won't say Paladins is a bad game, but in my opinion it just doesn't match up in those three categories.